Background: Psilocybin has shown rapid and sustained antidepressant effects in patients with major depressive disorder, yet the neurobiological mechanisms underlying these outcomes remain unclear. Aims: This study aimed to bridge clinical and preclinical findings by investigating the relationships between 5-HT 2A receptor occupancy (RO) achieved after administration of psilocybin and its...
Background: The treatment of major depressive disorder (MDD) with available antidepressant drugs is characterized by considerable ineffectiveness. Classical psychedelics such as psilocybin and N,N-dimethyltryptamine (DMT), which act primarily as 5-hydroxytryptamine 2A (5-HT 2A ) receptor agonists, have shown preliminary efficacy for inducing long-term remission in MDD after one or two doses....
Treating amotivated states remains difficult. Classical psychedelic drugs (5-HT2A receptor agonists) such as LSD and psilocybin have shown therapeutic potential in treating such symptoms, but their development has been hindered by their undesirable hallucinogenic effects. There is increasing evidence that administration of psychedelics at dose levels too low to evoke a hallucinogenic effect...
The term "cannabis psychosis" has become ubiquitous in the psychiatric literature. Few authors have described the precise psychopathology of this potentially distinct subtype of psychosis. Specifically, little attention has been paid to exploring whether cannabis psychosis is characterized by a psychopathology which is different from that of other types of psychosis. The purpose of this paper...